Hi Neil, Thank you for the patch! Yet something to improve: [auto build test ERROR on linus/master] [also build test ERROR on v5.12-rc7 next-20210412] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/0day-ci/linux/commits/Neil-Armstrong/drm-bridge-Add-it... base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git d434405aaab7d0ebc516b68a8fc4100922d7f5ef config: arc-randconfig-r024-20210413 (attached as .config) compiler: arc-elf-gcc (GCC) 9.3.0 reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # https://github.com/0day-ci/linux/commit/d86794bbe14422dfc00873eacf1eaae12... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Neil-Armstrong/drm-bridge-Add-it66121-driver/20210412-234852 git checkout d86794bbe14422dfc00873eacf1eaae121c34255 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arc If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): drivers/gpu/drm/bridge/ite-it66121.c: In function 'it66121_hw_reset': 242 | gpiod_set_value(ctx->gpio_reset, 1); | ^~~~~~~~~~~~~~~ drivers/gpu/drm/bridge/ite-it66121.c: In function 'it66121_probe': 1016 | revision_id = FIELD_GET(IT66121_REVISION_MASK, device_ids[1]); | ^~~~~~~~~ | FOLL_GET cc1: some warnings being treated as errors vim +/gpiod_set_value +242 drivers/gpu/drm/bridge/ite-it66121.c 239 240 static void it66121_hw_reset(struct it66121_ctx *ctx) 241 { 243 msleep(20); 244 gpiod_set_value(ctx->gpio_reset, 0); 245 } 246 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org